CN110497639B - Viscosity control process for tire crown strip - Google Patents

Viscosity control process for tire crown strip Download PDF

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Publication number
CN110497639B
CN110497639B CN201910640303.2A CN201910640303A CN110497639B CN 110497639 B CN110497639 B CN 110497639B CN 201910640303 A CN201910640303 A CN 201910640303A CN 110497639 B CN110497639 B CN 110497639B
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China
Prior art keywords
crown
water tank
crown band
wide
belt
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CN201910640303.2A
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Chinese (zh)
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CN110497639A (en
Inventor
齐格弗里德·拉策堡
杨京辉
陈松
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Tta Qingdao Tire Technology Co ltd
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Tta Qingdao Tire Technology Co ltd
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Priority to CN201910640303.2A priority Critical patent/CN110497639B/en
Publication of CN110497639A publication Critical patent/CN110497639A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools
    • B08B1/20Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools
    • B08B1/10Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/12Brushes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • B29D30/40Chemical pretreatment of textile inserts before building the tyre
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • B29D30/44Stretching or treating the layers before application on the drum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/38Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
    • B29D30/46Cutting textile inserts to required shape

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

The invention relates to a viscosity control process of a tire crown strip, which comprises the following steps: (1) soaking a separant: completely immersing the cut wide crown belt into a water tank containing a rubber separant aqueous solution, stretching the wide crown belt after the water tank is discharged out by a sponge roller, removing the rubber separant on the surface of the wide crown belt by an air blowing device, drying the surface of the wide crown belt by a drying device, and standing for later use; (2) and (3) cutting: cutting the dried wide crown band to obtain a standby crown band strip with a proper size, and coiling; (3) coating a release agent: the cut crown band strips are guided out and then enter a circulating water tank, pass through a plurality of groups of roller ways arranged in the circulating water tank, an upper group of hairbrushes and a lower group of hairbrushes arranged in the circulating water tank are used for cleaning rubber separants on the front surface and the back surface of the crown band strips, the back crown band strips sequentially pass through a blowing device and a drying device, the dried crown band strips are transmitted to a laminating drum of a forming machine through the roller ways, and the winding and laminating of the crown band strips of the forming green tire process are completed.

Description

Viscosity control process for tire crown strip
Technical Field
The invention relates to a viscosity control process of a tire crown strip, and belongs to the technical field of tire production.
Background
With the development of the tire manufacturing industry, various new equipment, new technology and new material are introduced into the tire manufacturing process, but the management of the viscosity of the crown band strip in the tire production process is always in an out-of-control state, and the viscosity of the crown band strip changes along with the change of a series of influence factors such as seasons, raw materials, temperature and humidity, storage time and the like, so that a great amount of framework material waste and batch quality problems are caused.
The existing production process has no effective prevention mechanism, generally, the formula is adjusted or the process conditions are adjusted after problems occur, individual factories are provided with equipment for detecting the viscosity of the crown band strips for detecting the viscosity of products after rolling, and in addition, when the crown band strips are cut, the surfaces of the wide crown bands are treated by adopting vertically arranged steel wire brushes so as to reduce the viscosity in the winding process after cutting.
Therefore, the existing solutions are all carried out after the crown band is rolled, the hysteresis is obvious, the controllability of the viscosity is extremely poor, even if a single factory is provided with equipment for detecting the viscosity of the crown band, the data statistical analysis after production is limited, the guiding significance of the viscosity control in the production process is not great, the correction and management on the defects after the rolling cannot be carried out, the surfaces of the crown bands are treated by using a steel wire brush during the cutting, although the adhesion can be reduced to a certain degree, the effect is general, and the effect cannot be basically exerted on the crown bands with large viscosity.
Disclosure of Invention
The invention provides a tire crown strip viscosity control process aiming at the current situation that no effective crown strip viscosity control mechanism exists in the existing tire production process.
The technical scheme for solving the technical problems is as follows:
a process for controlling the tackiness of a crown tape of a tire, comprising the steps of:
(1) soaking a separant: completely immersing the cut wide crown belt into a water tank containing a rubber separant aqueous solution, stretching the wide crown belt after the water tank is discharged out by a sponge roller, removing the rubber separant on the surface of the wide crown belt by an air blowing device, drying the surface of the wide crown belt by a drying device, and standing for later use;
(2) and (3) cutting: cutting the wide crown band dried in the step (1) to obtain a standby crown band strip with a proper size, and coiling;
(3) coating a release agent: and (3) guiding the crown band strips cut in the step (2) out, sending the crown band strips into a circulating water tank, penetrating through a plurality of groups of roller ways arranged in the circulating water tank, cleaning the rubber separants on the front and back surfaces of the crown band strips by an upper group of hairbrushes and a lower group of hairbrushes arranged in the circulating water tank, sequentially passing the rear crown band strips through a blowing device and a drying device, and transmitting the dried crown band strips to a forming machine laminating drum through the roller ways to finish the winding and laminating of the crown band strips of the forming green tire process.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the concentration of the rubber separant in the aqueous solution in the step (1) is 3-8 wt%.
Further, the immersion time of the wide crown belt in the water tank in the step (1) is 5-20 s.
Further, the temperature of the drying device in the step (1) is 70-90 ℃.
Further, the temperature of the drying device in the step (3) is 90-110 ℃.
The rubber release agent used in the invention is a mature commodity available on the market, and can be a product produced by any manufacturer.
The process has the beneficial effects that:
1) the rubber release agent coating can ensure that the problem of adhesion is not generated when the cap strip is cut, and the surface coating is removed in a water immersion and scraping and brushing mode when the cap strip is formed and used, so that the original viscosity of the cap strip is recovered, and the adhesive force required by forming is ensured.
2) The process can ensure reasonable and uniform viscosity of the cap strip used each time, improve production efficiency, reduce cost loss and reduce waste and defective products caused by poor viscosity. Through field measurement and calculation, by adopting the crown band strip viscosity control process, 95% of waste materials of the crown band strip can be reduced, and the production efficiency of crown band strip cutting is improved by 40%.
Drawings
FIG. 1 is a schematic process flow diagram of step (1);
FIG. 2 is a process flow diagram of step (3);
in fig. 1 and 2, 1, a wide crown band; 2. a water tank; 3. a sponge roller; 4. a blowing device; 5. a drying device; 6. a crown band; 7. a circulating water tank; 8. a roller bed; 9. a brush;
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
The 1260D/2NL66 crown band strip frequently used in the tire industry is divided into 8 wide crown bands with the width of 1450mm at a time, the 8 wide crown bands are rolled into large rolls with the width of 1450mm, the large rolls are divided into 8 wide crown bands with the width of 180mm, and the edges on two sides are respectively trimmed by 5 mm. The crown band width is 15mm, 12 crown band coiling stations are taken as examples, and the description of the embodiment is carried out:
(1) parting agent for cutting wide crown belt and dipping rubber
As shown in figure 1, after being cut, a wide crown belt 1 is completely immersed into a water tank 2 containing a rubber separant aqueous solution, the concentration of the rubber separant in the aqueous solution is 3-8 wt%, the immersion time is 5-20 s, after the water is discharged from the water tank, the rubber separant on the surface is removed through an upper blowing device 4 and a lower blowing device 4 after passing through an upper sponge roller 3 and a lower sponge roller 3 with the diameter of 200mm, the surface is dried through a set of heating and drying device 5, the drying temperature is generally 70-90 ℃, the drying device works in the normal operation process of equipment, and the heating is stopped when the operation is stopped, so that the quality problem of the cord fabric is avoided.
(2) Crown band dividing and cutting
The wide crown tape having a width of 180mm was cut into 12 crown tape strips 6 having a width of 15mm and wound up.
(3) De-coating
The method comprises the steps of standing the soaked and dried wide crown band for 2 hours, then cutting the crown band, normally installing and unwinding the cut 15mm crown band material roll on a forming machine, passing the wound crown band through a circulating water tank 7, cleaning the front side and the back side of two groups of palm fiber hairbrushes 9 when the crown band passes through roller ways 8 from the circulating water tank, removing the rubber separant coating covered on the surface of the crown band and enabling the crown band to recover good viscosity, sequentially passing the crown band after the surface coating is removed through two groups of blowing devices and drying devices, wherein the drying temperature is generally 90-110 ℃, the drying devices work in the normal operation process of equipment, stop heating when the operation stops, and avoid the problem of glue ripeness caused by long-time heating, and the dried crown band is transferred to a forming machine laminating drum through the roller ways to complete the winding and laminating of the crown band of the forming green tire process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. A process for controlling the tackiness of a crown strip of a tyre, characterized in that it comprises the following steps:
(1) soaking a separant: completely immersing the cut wide crown belt into a water tank containing a rubber separant aqueous solution, stretching the wide crown belt after the water tank is discharged out by a sponge roller, removing the rubber separant on the surface of the wide crown belt by an air blowing device, drying the surface of the wide crown belt by a drying device, and standing for later use;
(2) and (3) cutting: cutting the wide crown band dried in the step (1) to obtain a standby crown band strip with a proper size, and coiling;
(3) coating a release agent: and (3) guiding the crown band strips cut in the step (2) out, sending the crown band strips into a circulating water tank, penetrating through a plurality of groups of roller ways arranged in the circulating water tank, cleaning the rubber separants on the front and back surfaces of the crown band strips by an upper group of hairbrushes and a lower group of hairbrushes arranged in the circulating water tank, sequentially passing the rear crown band strips through a blowing device and a drying device, and transmitting the dried crown band strips to a forming machine laminating drum through the roller ways to finish the winding and laminating of the crown band strips of the forming green tire process.
2. The viscosity control process according to claim 1, wherein the concentration of the rubber release agent in the aqueous solution of step (1) is 3 to 8 wt%.
3. The viscosity control process according to claim 1 or 2, wherein the immersion time of the broad crown tape in the water tank in the step (1) is 5 to 20 s.
4. The viscosity control process according to claim 3, wherein the temperature of the drying device in the step (1) is 70 to 90 ℃.
5. The viscosity control process according to claim 3, wherein the temperature of the drying device in the step (3) is 90 to 110 ℃.
CN201910640303.2A 2019-07-16 2019-07-16 Viscosity control process for tire crown strip Active CN110497639B (en)

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Application Number Priority Date Filing Date Title
CN201910640303.2A CN110497639B (en) 2019-07-16 2019-07-16 Viscosity control process for tire crown strip

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Application Number Priority Date Filing Date Title
CN201910640303.2A CN110497639B (en) 2019-07-16 2019-07-16 Viscosity control process for tire crown strip

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CN110497639B true CN110497639B (en) 2021-05-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050012439A (en) * 2003-07-25 2005-02-02 주식회사 효성 Process for preparing lyocell tire cord for passenger tire-cap ply
CN103625219A (en) * 2013-11-07 2014-03-12 浙江准提实业有限公司 Manufacturing method of radial tire cap ply
CN107745534A (en) * 2017-11-22 2018-03-02 正新橡胶(中国)有限公司 A kind of band cord banding machine and its tape coil diameter detection device
CN107869065A (en) * 2017-05-08 2018-04-03 青岛康威化纤有限公司 Use string of a hat curtain cloth production technology
CN109835118A (en) * 2017-11-29 2019-06-04 锦湖轮胎株式会社 Thin layer band and the low weight tire for using the thin layer band

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050048280A1 (en) * 2003-08-29 2005-03-03 Stamper Rodney Gene Apparatus and process for making a tape useful as a tire cap ply

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050012439A (en) * 2003-07-25 2005-02-02 주식회사 효성 Process for preparing lyocell tire cord for passenger tire-cap ply
CN103625219A (en) * 2013-11-07 2014-03-12 浙江准提实业有限公司 Manufacturing method of radial tire cap ply
CN107869065A (en) * 2017-05-08 2018-04-03 青岛康威化纤有限公司 Use string of a hat curtain cloth production technology
CN107745534A (en) * 2017-11-22 2018-03-02 正新橡胶(中国)有限公司 A kind of band cord banding machine and its tape coil diameter detection device
CN109835118A (en) * 2017-11-29 2019-06-04 锦湖轮胎株式会社 Thin layer band and the low weight tire for using the thin layer band

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